It is called as sublimation............
sublimation.
Those substances which undergo the process of sublimation change directly from solid to gas or from gas to solid. Example:- Ammonium chloride, Camphor
SOLID
It is very interesting to know that camphor is solid at room temperature. However if it is heated even slightly, it changes into gaseous state.
The process by which water (liquid) changes into Water vapor (gas) is called Evaporation.
Heating will cause the gas to expand; or, if the container does not permit expansion, for the pressure of the gas to increase. Other changes to the gas depend on which gas is being heated.
Liquid water that changes into a gas is called evaporation. It is almost always done by heating to a boiling point.
The change in phase is called evaporation. It can be caused by heating or by a change in air pressure.
sublimate
Those substances which undergo the process of sublimation change directly from solid to gas or from gas to solid. Example:- Ammonium chloride, Camphor
When you heat something, you get to do from solid to liquid, and that called melting. The liquid to a gas its called vaporzation and evaporation. A solid to a gas its called sublimation. When you cool something, you get to do from gas to liquid its called condensation. A liquid to a solid called freezing. A gas turn straight to a solid called deposition.
Direct transformation of a solid to a gas is called sublimation.
SOLID
When a gas changes directly to a solid it is called deposition.
The process by which water changes from solid to gas is called sublimation Water in solid form is known as ice which on heating turns into water vapour OS steam , it depends at what temprature you are heating.
Condensation is when a gas changes to a liquid
In case of sublimation. Example burning of camphor or just vapourization of camphor
It is very interesting to know that camphor is solid at room temperature. However if it is heated even slightly, it changes into gaseous state.